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  • Book Overview & Buying Oracle JRockit: The Definitive Guide
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Oracle JRockit: The Definitive Guide

Oracle JRockit: The Definitive Guide

4.8 (10)
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Oracle JRockit: The Definitive Guide

Oracle JRockit: The Definitive Guide

4.8 (10)

Overview of this book

Oracle JRockit is one of the industry’s highest performing Java Virtual Machines. Java developers are always on the lookout for better ways to analyze application behavior and gain performance. As we all know, this is not as easy as it looks. Welcome to JRockit: The Definitive Guide.This book helps you gain in-depth knowledge of Java from the JVM’s point of view. We will explain how to write code that works well with the JVM to gain performance and scalability. Starting with the inner workings of the JRockit JVM and finishing with a thorough walkthrough of the tools in the JRockit Mission Control suite, this book is for anyone who wants to know more about how the JVM executes your Java application and how to profile for better performance.
Table of Contents (23 chapters)
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Oracle JRockit
Credits
Foreword
About the Authors
Acknowledgement
About the Reviewers
Preface
12
Using the JRockit Management APIs
1
Bibliography
2
Glossary
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AST
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CAS
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HIR
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IR
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JFR
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JMX
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JRA
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JSR
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LIR
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MD5
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MIR
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PDE
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RCP
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SWT
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TLA
3
Index

Chapter 6. JRockit Mission Control

JRockit, as a Java runtime, is required to constantly monitor the running Java application. As has been explained in previous chapters, JRockit must, among other things, be able to find out in which methods the Java application is spending the most time executing code. JRockit is also responsible for keeping track of the memory usage and memory allocation behavior of the application—it would be fairly upsetting if JRockit forgot a few objects, or if memory was not reclaimed when objects were no longer referenced.

The wealth of data that JRockit already collects is, of course, a very good source of information when profiling your Java program or when doing diagnostics.

In this, the second part of the book, the JRockit tools suite is presented. The following chapters introduce four of the tools that are included in the JRockit distribution—the JRockit Mission Control Console, the JRockit Runtime Analyzer (which was superseded by the JRockit Flight Recorder...

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Oracle JRockit: The Definitive Guide
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